The following will take you to a pdf of the 1981 WRTH review of the Drake R7:

http://idisk.mac.com/hlhud/Public/WRTH:R7:1981.pdf/

(Via H. Huddleston who currently has a Drake R7, RV75, MS4 combo for sale on
eBay)

http://cgi.ebay.com/Drake-R7-Receiver-RV75-VFO-MS-4-Speaker-Manuals_W0QQitemZ120150995583QQihZ002QQcategoryZ15 051QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

dxAce
Michigan
USA

Don't do business with the Huntington Investment Company.